p-Dichlorobenzene
Williams Mobile Home Park
p-Dichlorobenzene is a carcinogenic insecticide used in mothballs, and added to deodorant blocks made for trash cans and toilets. Long-term exposure can cause liver damage and kidney problems.
Samples
Samples exceeding legal limit (MCL)
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2014 | 0.400 ppb | 2 | 1 | ND - 0.800 ppb |
| 2015 | ND | 3 | 0 | ND |
| 2016 | ND | 2 | 0 | ND |
| 2017 | ND | 3 | 0 | ND |
| 2018 | ND | 2 | 0 | ND |
| 2019 | ND | 1 | 0 | ND |
ppb = parts per billion
State and national drinking water standards and health guidelines
EWG Health Guideline 6 ppb
The EWG Health Guideline of 6 ppb for p-dichlorobenzene was defined by the California Office of Environmental Health Hazard Assessment as a public health goal, the level of a drinking water contaminant that does not pose a significant health risk. This health guideline protects against cancer.
EPA Maximum Contaminant
Level (MCL) 75 ppb
The legal limit for p-dichlorobenzene, established in 1987, was based on toxicity studies conducted in laboratory animals in the 1980s. This limit may not fully protect against the risk of cancer due to p-dichlorobenzene exposure.
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2014-07-18 | 0070238_01_00240 | 0.800 ppb |
| 2014-07-18 | 0070238_02_00240 | ND |
| 2015-03-17 | E15002872006 | ND |
| 2015-03-17 | E15002872004 | ND |
| 2015-03-17 | E15002872001 | ND |
| 2016-10-21 | E17001801004 | ND |
| 2016-10-21 | E17001801001 | ND |
| 2017-07-06 | E18000032006 | ND |
| 2017-07-06 | E18000032001 | ND |
| 2017-07-17 | E18000175001 | ND |
| 2018-09-26 | E19001094004 | ND |
| 2018-09-26 | E19001094001 | ND |
| 2019-09-10 | E20001012006 | ND |